From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id 94257b2e for ; Thu, 16 Jan 2020 00:18:33 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 2A14D9BFE7; Thu, 16 Jan 2020 10:18:32 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id DE1E09B898; Thu, 16 Jan 2020 10:18:21 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="key not found in DNS" (0-bit key; unprotected) header.d=bitsavers.org header.i=aek@bitsavers.org header.b="hp1ACdx7"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 656479BFE3; Thu, 16 Jan 2020 10:18:18 +1000 (AEST) Received: from ezwind.net (smtp.ezwind.net [71.91.242.96]) by minnie.tuhs.org (Postfix) with ESMTPS id DA1229BFE7 for ; Thu, 16 Jan 2020 10:18:04 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/relaxed; d=bitsavers.org; s=MDaemon; t=1579133877; x=1579738677; i=aek@bitsavers.org; q=dns/txt; h=Subject:To:References:From: Message-ID:Date:User-Agent:MIME-Version:In-Reply-To:Content-Type: Content-Language:Content-Transfer-Encoding; bh=SK+iNCQHrVl2+LL+c ls76Skz9MGZC8nM/5kDemXH7w0=; b=hp1ACdx7QoNPmziw/oYc5Oi66EY1jn1x2 LQ4FvJV4UjGhYxbn4JQXIUNSGeBN6lmOwYpFBfLI4dnrpOy00c+IBuUsMQFUmimJ fkp07TFcAdp3ArLGbMBL47GCfN0vOgZpFh3t1lZ/qG7OjC4YbUUm90tbM0F1qEIK Uog2U8hlEk= X-MDAV-Result: clean X-MDAV-Processed: ezwind.net, Wed, 15 Jan 2020 18:17:57 -0600 Received: from aekmac.local by ezwind.net (MDaemon PRO v16.0.4) with ESMTPA id 03-md50000056112.msg for ; Wed, 15 Jan 2020 18:17:57 -0600 X-MDRemoteIP: 71.6.95.114 X-MDHelo: aekmac.local X-MDArrival-Date: Wed, 15 Jan 2020 18:17:57 -0600 X-Authenticated-Sender: aek@bitsavers.org X-Return-Path: prvs=1284f44dd5=aek@bitsavers.org X-Envelope-From: aek@bitsavers.org X-MDaemon-Deliver-To: tuhs@minnie.tuhs.org X-CAV-Result: clean To: tuhs@minnie.tuhs.org References: <7wsgkhgs5l.fsf@junk.nocrew.org> <20200115132428.EDF319B898@minnie.tuhs.org> From: Al Kossow Message-ID: <8ba0abdf-fefe-5494-785f-c0bcd020bdc9@bitsavers.org> Date: Wed, 15 Jan 2020 16:17:44 -0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:68.0) Gecko/20100101 Thunderbird/68.3.1 MIME-Version: 1.0 In-Reply-To: <20200115132428.EDF319B898@minnie.tuhs.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: [TUHS] tape reading (was Re: Spacewar at Bell Labs) X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" On 1/15/20 4:29 AM, John Foust wrote: > Same thing for a new way to read a magtape. You'd think it > could be done with a universal read head and some software. It's been done. You need a good transport that has enough torque to deal with sticky tapes and a digitizer with about 100gigs of ram if you're doing acquisition with a Saleae Logic16 USB3 analyzer. https://github.com/LenShustek/readtape The setup is a couple thousand dollars.